Paper bag bottom opening mechanism and paper bag processing device

By combining the adsorption substrate assembly and the flexible drive assembly, the problems of insufficient stability and noise at the bottom of the paper bag are solved, achieving stable opening of the bottom of the paper bag and low-noise drive.

CN224447100UActive Publication Date: 2026-07-03WENZHOU JIAHENG PRINTING EQUIPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU JIAHENG PRINTING EQUIPMENT CO LTD
Filing Date
2025-08-13
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The existing paper bags have insufficient bottom support stability and are prone to generating noise during opening.

Method used

The paper bag is fixed by adsorption substrate assembly and flexible drive assembly. The bottom of the paper bag is adsorbed and fixed by the adsorption assembly, and the bottom of the paper bag is stretched and unfolded by the flexible drive assembly, which reduces noise.

Benefits of technology

It improves the support stability of the bottom of the paper bag, reduces noise during opening, and enhances the level of automation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a paper bag bottom opening mechanism and paper bag processing equipment, above mentioned paper bag bottom opening mechanism include: the organism, two groups of adsorption base plate subassembly, two groups of adsorption subassembly and two groups of flexible drive subassembly, two groups of adsorption base plate subassembly are located on the organism for the paper bag adsorption fixed, two groups of adsorption subassembly are respectively located on two groups of adsorption base plate subassembly, and all can pivot between first position and second position, when two groups of adsorption subassembly pivot to first position, adsorption subassembly commonly adsorbs and fixes paper bag bottom, when two groups of adsorption subassembly pivot to second position, two groups of adsorption subassembly commonly stretch and open paper bag bottom, two groups of flexible drive subassembly are respectively located at two groups of adsorption base plate subassembly bottom, and transmission connection between two groups of adsorption subassembly respectively. The utility model discloses can through adsorption base plate subassembly and carry out adsorption fixed paper bag, improve the stability of paper bag support, when opening to paper bag bottom, the drive of flexible drive subassembly can better reduce the noise.
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Description

Technical Field

[0001] This utility model relates to the field of automated processing technology, specifically to a paper bag bottom opening mechanism and paper bag processing equipment. Background Technology

[0002] In the packaging industry, paper bags are a common packaging material. The ease of opening and the stability of the bottom are important indicators of their quality. In related technologies, existing paper bags usually need to have a bottom clip placed at the bottom to enhance the support strength of the bottom of the paper bag. Before the bottom clip is placed, the bottom of the paper bag needs to be opened. During the opening process, the existing equipment provides relatively simple support for the bottom of the paper bag, resulting in insufficient stability of the paper bag support. Furthermore, using cylinders or other methods to drive the opening of the bottom of the paper bag can easily generate a lot of noise. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a paper bag bottom opening mechanism, comprising:

[0004] Organism;

[0005] Two sets of adsorption substrate assemblies are disposed on the machine body for adsorbing and fixing the paper bag.

[0006] Two sets of adsorption components are respectively disposed on two sets of adsorption substrate components, and each set can pivot between a first position and a second position. When the two sets of adsorption components pivot to the first position, the two sets of adsorption components jointly adsorb and fix the bottom of the paper bag; when the two sets of adsorption components pivot to the second position, the two sets of adsorption components jointly stretch and unfold the bottom of the paper bag.

[0007] Two sets of flexible drive components are respectively disposed at the bottom of the two sets of adsorption substrate components and are respectively connected to the two sets of adsorption components.

[0008] Preferably, the adsorption substrate assembly includes:

[0009] A base plate, which is movably mounted on the machine body;

[0010] An adsorption plate is disposed on the base plate and is used to adsorb and fix the paper bag under negative pressure.

[0011] Preferably, the adsorption plate is provided with a first through hole and a second through hole, the first through hole is located at the top of the adsorption plate, the second through hole is located on the side of the adsorption plate, and the adsorption plate is provided with a connecting cavity inside, the connecting cavity connecting the first through hole and the second through hole.

[0012] Preferably, the base plate is further provided with a support block, the support block is disposed adjacent to the adsorption plate, and the adsorption assembly is pivotally disposed on the support block.

[0013] Preferably, each set of the adsorption components includes:

[0014] A rotating shaft is rotatably mounted on the support block;

[0015] A first connecting rod, one end of which is fixedly connected to the circumferential surface of the rotating shaft so as to move synchronously with the rotating shaft;

[0016] The second connecting rod is fixedly connected to the other end of the first connecting rod so as to move synchronously with the first connecting rod;

[0017] A flip plate is provided on the second connecting rod so as to move synchronously with the second connecting rod;

[0018] A suction nozzle is disposed on the flip plate and is used to move with the flip plate to the first position or the second position.

[0019] Preferably, a second transmission wheel is fixedly connected to one end of the rotating shaft, and the second transmission wheel is connected to the flexible drive assembly in a transmission connection.

[0020] Preferably, each group of the flexible drive components includes:

[0021] An electric motor is located below the base plate;

[0022] The first transmission wheel is connected to the motor;

[0023] A drive belt, one end of which is connected to the first drive pulley and the other end of which is connected to the second drive pulley.

[0024] Preferably, the machine body is provided with a slide rail, and the base plate and the slide rail are slidably connected by a slider.

[0025] Preferably, the bottom of the base plate is further provided with a lead screw, and the lead screw is connected to the base plate by a lead screw drive.

[0026] Another objective of this invention is to provide a paper bag processing equipment, including the paper bag bottom opening mechanism as described above.

[0027] The above-described solution of this utility model has at least the following beneficial effects:

[0028] The paper bag opening mechanism provided by this utility model drives the adsorption component through a flexible drive component, so that the adsorption component can pivot to the first position to adsorb and fix the bottom of the paper bag, and when it pivots to the second position, it stretches and unfolds the bottom of the paper bag. Thus, during the opening action of the bottom of the paper bag, the paper bag can be adsorbed and fixed by the adsorption substrate component first, which improves the stability of the paper bag support. Furthermore, when opening the bottom of the paper bag, the use of a flexible drive component can better reduce noise.

[0029] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the paper bag bottom opening mechanism provided in the embodiments of this utility model;

[0032] Figure 2 This is a partial structural schematic diagram of the paper bag bottom opening mechanism provided in this embodiment of the utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the adsorption substrate assembly, adsorption assembly and flexible drive assembly provided in the embodiments of this utility model;

[0034] Figure 4 This is another structural schematic diagram of the adsorption substrate assembly, adsorption assembly, and flexible drive assembly provided in this embodiment of the utility model;

[0035] Figure 5 This is a cross-sectional view of the adsorption plate provided in the embodiment of this utility model;

[0036] Explanation of icon numbers:

[0037] 10. Body; 20. Adsorption substrate assembly; 21. Base plate; 22. Adsorption plate; 221. First through hole; 222. Second through hole; 223. Connecting cavity; 23. Support block; 30. Adsorption assembly; 31. Rotating shaft; 32. First connecting rod; 33. Second connecting rod; 34. Flip plate; 35. Suction nozzle; 36. Second transmission wheel; 40. Flexible drive assembly; 41. Motor; 42. First transmission wheel; 43. Transmission belt; 50. Slide rail; 51. Slider; 60. Lead screw.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] The paper bag bottom opening mechanism and paper bag processing equipment of this utility model embodiment are described in detail below with reference to the accompanying drawings.

[0045] Reference Figure 1 and Figure 2 As shown, the paper bag bottom opening mechanism provided in this embodiment of the present invention includes: a body 10, two sets of adsorption substrate assemblies 20, two sets of adsorption components 30, and two sets of flexible drive components 40. The two sets of adsorption substrate assemblies 20 are disposed on the body 10 and are used to adsorb and fix the paper bag. The two sets of adsorption substrate assemblies 20 are arranged opposite to each other, and the distance between the two sets of adsorption substrate assemblies 20 can be adjusted to accommodate paper bags of different sizes. The two sets of adsorption components 30 are respectively disposed on the two sets of adsorption substrate assemblies 20, and can pivot between a first position and a second position. When the two sets of adsorption components 30 pivot to the first position, the two sets of adsorption components 30 jointly adsorb and fix the bottom of the paper bag that is not glued and fixed. When the two sets of adsorption components 30 pivot to the second position, the two sets of adsorption components 30 jointly stretch and unfold the bottom of the paper bag that is not glued and fixed, so as to insert the bottom cardboard. The two sets of flexible drive components 40 are respectively disposed at the bottom of the two sets of adsorption substrate assemblies 20 and are respectively connected to the two sets of adsorption components 30 for transmission.

[0046] Reference Figure 3 and Figure 4 As shown, each flexible drive assembly 40 includes: a motor 41, a first drive wheel 42, and a drive belt 43. The motor 41 is located below the base plate 21; the first drive wheel 42 is connected to the motor 41; one end of the drive belt 43 is connected to the first drive wheel 42, and the other end is connected to the second drive wheel 36.

[0047] In this embodiment, when the motor 41 drives the first transmission wheel 42 to rotate, the first transmission wheel 42 can drive the second transmission wheel 36 to rotate via the transmission belt 43. This causes the rotating shaft 31 to rotate with the second transmission wheel 36, causing the suction nozzle 35 to flip. The transmission is carried out via the transmission belt 43. Compared with traditional methods such as cylinders and screws, this method can better reduce noise during operation.

[0048] Reference Figures 3 to 5As shown, the adsorption substrate assembly 20 includes a base plate 21 and an adsorption plate 22. The base plate 21 is movably disposed on the body 10. The adsorption plate 22 is disposed on the base plate 21 and is used to adsorb and fix the paper bag under negative pressure. Furthermore, the adsorption plate 22 is provided with a first through hole 221 and a second through hole 222. The first through hole 221 is located on the top of the adsorption plate 22, and the second through hole 222 is located on the side of the adsorption plate 22. The adsorption plate 22 is provided with a connecting cavity 223 inside, which connects the first through hole 221 and the second through hole 222.

[0049] In this embodiment, an air pipe connector can be provided on the adsorption plate 22, so that the air pipe connector can be connected to the connecting cavity 223. At the same time, the air pipe connector can be connected to a vacuum device through an air pipe. Since the first through hole 221, the second through hole 222 and the connecting cavity 223 are interconnected, the vacuum device can be used to draw the connecting cavity 223 to a negative pressure state, so that when the paper bag is transported to the adsorption plate 22, the paper bag can be adsorbed and fixed by the first through hole 221 and the second through hole 222. Thus, the two sets of adsorption components 30 complete the synchronous opening action of the bottom of the paper bag, ensuring that the adsorption of the paper bag is more stable during the opening process.

[0050] In a preferred embodiment, during the process of adjusting the distance between the two adsorption substrate assemblies 20, the body 10 is provided with a slide rail 50, and the base plate 21 is slidably connected to the slide rail 50 by a slider 51; furthermore, the bottom of the base plate 21 is also provided with a lead screw 60, and the lead screw 60 is threadedly connected to the base plate 21.

[0051] In this embodiment, the lead screw 60 can be driven to rotate by a motor 41 or other means, so that the lead screw 60 can drive the two base plates 21 to move along the length direction of the slide rail 50, thereby adjusting the distance between the two base plates 21, so that the distance between the two adsorption plates 22 can be adjusted to a suitable position, so that the two adsorption plates 22 can be used to adsorb and fix paper bags of different sizes. At the same time, the position of the suction nozzle 35 can also be adjusted with the position of the base plates 21.

[0052] Specifically, a support block 23 is also provided on the base plate 21. The support block 23 is arranged adjacent to the adsorption plate 22, and the adsorption assembly 30 is pivotally mounted on the support block 23. Further, each adsorption assembly 30 includes: a rotating shaft 31, a first connecting rod 32, a second connecting rod 33, a flipping plate 34, and a suction nozzle 35. The rotating shaft 31 is rotatably mounted on the support block 23. One end of the first connecting rod 32 is fixedly connected to the circumferential surface of the rotating shaft 31 to achieve synchronous movement with the rotating shaft 31. The other end of the second connecting rod 33 is fixedly connected to the first connecting rod 32 to achieve synchronous movement with the first connecting rod 32. The flipping plate 34 is mounted on the second connecting rod 33 to achieve synchronous movement with the second connecting rod 33. The suction nozzle 35 is mounted on the flipping plate 34 and is used to move with the flipping plate 34 to a first position or a second position.

[0053] In this embodiment, the first connecting rod 32 and the second connecting rod 33 can be vertically arranged, and the first connecting rod 32 and the second connecting rod 33 can be adjusted along their respective vertical directions. For example, the second connecting rod 33 can be adjusted along the vertical direction of the first connecting rod 32, or the first connecting rod 32 can be adjusted along the vertical direction of the second connecting rod 33. After adjustment, the second connecting rod 33 and the first connecting rod 32 can be fixed by screws or other means. The relative position of the second connecting rod 33 and the first connecting rod 32 is adjusted to adjust the distance between the flip plate 34 and the first connecting rod 32, ensuring that when the flip plate 34 and the suction nozzle 35 are adjusted to the first position, they face the bottom of the paper bag. When the rotating shaft 31 rotates, the first connecting rod 32 can rotate synchronously with the rotating shaft 31, so that... The second connecting rod 33 drives the flipping plate 34 to flip to a first position or a second position. The first position can be the position where the suction nozzle 35 is close to the adsorption plate 22, and the second position can be the position where the suction nozzle 35 is away from the adsorption plate 22. When the suction nozzle 35 is driven to flip to the first position, it can adsorb and fix the bottom of the paper bag. Then, the suction nozzle 35 is flipped to the second position, so that the bottom of the paper bag can be stretched and unfolded with the suction nozzle 35. Then, the bottom card is placed, which makes the overall automation level higher and the stability of the bottom of the paper bag better when it is opened. Optionally, each flipping plate 34 can have multiple suction nozzles 35, which can be spaced apart along the length of the flipping plate 34, so that multiple suction nozzles 35 can adsorb multiple positions of the bottom of the paper bag at intervals, ensuring better stability during the adsorption process.

[0054] Furthermore, a second transmission wheel 36 is fixedly connected to one end of the rotating shaft 31, and the second transmission wheel 36 is connected to the flexible drive assembly 40 for transmission. The flexible drive assembly 40 can drive the second transmission wheel 36 to rotate and simultaneously drive the rotating shaft 31 to rotate, so as to flip the suction nozzle 35 to the first position or the second position.

[0055] In this embodiment, the process is mainly used for placing the bottom card on the bottom of the paper bag. The paper bag can be conveyed to the adsorption substrate assembly 20 by means of conveying rollers, so that the adsorption substrate assembly 20 can adsorb and fix the paper bag. When the paper bag is adsorbed onto the adsorption substrate assembly 20, the bottom of the paper bag that is not glued and fixed can be adsorbed and stretched out by two sets of adsorption components 30 at the same time, thereby completing the process of placing the bottom card, ensuring that the bottom of the paper bag opens more stably and with higher efficiency.

[0056] The paper bag opening mechanism provided by this utility model drives the adsorption component 30 through the flexible drive component 40, so that the adsorption component 30 can pivot to the first position to adsorb and fix the bottom of the paper bag, and stretch and unfold the bottom of the paper bag when pivoting to the second position. Thus, during the opening action of the bottom of the paper bag, the paper bag can be adsorbed and fixed by the adsorption substrate component 20 first, which improves the stability of the paper bag support. When opening the bottom of the paper bag, the use of the flexible drive component 40 can better reduce noise.

[0057] The paper bag processing equipment proposed in the embodiments of this utility model includes the paper bag bottom opening mechanism as described above. The paper bag processing equipment can transport the paper bag to the paper bag bottom opening mechanism and drive the adsorption component 30 through the flexible drive component 40. This allows the adsorption component 30 to pivot to a first position to adsorb and fix the bottom of the paper bag, and then pivot to a second position to stretch and unfold the bottom of the paper bag. Thus, during the opening action at the bottom of the paper bag, the paper bag can be adsorbed and fixed by the adsorption substrate component 20, improving the stability of the paper bag support. Furthermore, using the flexible drive component 40 to drive the opening of the bottom of the paper bag can better reduce noise. After opening, a bottom clip can be placed at the bottom of the paper bag. After placing the bottom clip, operations such as applying glue to the bottom of the paper bag can be performed, improving the overall automation level.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A paper bag bottom opening mechanism characterized by comprising: include: Organism; Two sets of adsorption substrate assemblies are disposed on the machine body for adsorbing and fixing the paper bag. Two sets of adsorption components are respectively disposed on two sets of adsorption substrate components, and each set can pivot between a first position and a second position. When the two sets of adsorption components pivot to the first position, the two sets of adsorption components jointly adsorb and fix the bottom of the paper bag; when the two sets of adsorption components pivot to the second position, the two sets of adsorption components jointly stretch and unfold the bottom of the paper bag. Two sets of flexible drive components are respectively disposed at the bottom of the two sets of adsorption substrate components and are respectively connected to the two sets of adsorption components.

2. The paper sack bottoming mechanism according to claim 1, characterized by Each group of the flexible drive components includes: An electric motor is located below the adsorption substrate assembly; The first transmission wheel is connected to the motor; A transmission belt, one end of which is connected to the first transmission wheel and the other end of which is connected to the adsorption assembly.

3. The paper sack bottoming mechanism according to claim 1, wherein The adsorption substrate assembly includes: A base plate, which is movably mounted on the machine body; An adsorption plate is disposed on the base plate and is used to adsorb and fix the paper bag under negative pressure.

4. The paper sack bottoming mechanism according to claim 3, wherein The adsorption plate is provided with a first through hole and a second through hole. The first through hole is located at the top of the adsorption plate, and the second through hole is located on the side of the adsorption plate. The adsorption plate is provided with a connecting cavity inside, which connects the first through hole and the second through hole.

5. The paper sack bottoming mechanism according to claim 3, wherein The base plate is also provided with a support block, which is arranged adjacent to the adsorption plate, and the adsorption assembly is pivotally mounted on the support block.

6. The paper sack bottoming mechanism according to claim 5, wherein Each adsorption assembly includes: A rotating shaft is rotatably mounted on the support block; A first connecting rod, one end of which is fixedly connected to the circumferential surface of the rotating shaft so as to move synchronously with the rotating shaft; The second connecting rod is fixedly connected to the other end of the first connecting rod so as to move synchronously with the first connecting rod; A flip plate is mounted on the second connecting rod to move synchronously with the second connecting rod; A suction nozzle is disposed on the flip plate and is used to move with the flip plate to the first position or the second position.

7. The paper sack bottoming mechanism according to claim 6, wherein One end of the rotating shaft is fixedly connected to a second transmission wheel, which is connected to the flexible drive assembly in a transmission connection.

8. The paper sack bottoming mechanism according to claim 3, wherein The machine body is equipped with a slide rail, and the base plate is slidably connected to the slide rail by a slider.

9. The paper sack bottoming mechanism according to claim 3, wherein The bottom of the base plate is also provided with a lead screw, which is threadedly connected to the base plate.

10. A paper bag processing apparatus characterized by comprising: Includes the paper bag bottom opening mechanism as described in any one of claims 1 to 9.